E356. 4 
not difcover one which did not yield 
poifonous air, though in a fmall 
quantity, by day and by night, and 
which had not the power of render- 
ing quite unfit for refpiration a very 
confiderable body of common air. 
They even feem not to lofe in the 
Jeaft their deletérious influence in 
the fun; fo that I cannot but think — 
that it is unfafe to keep in a clofe 
room a large quantity of any — 
flowers, even fuch as have the moft 
delightful fmell. I am, however, 
_ very far from thinking that there 
is any danger to apprehend from 
uch nofegays as are commonly kept 
in a room, either for ornament or 
perfume. The malignant influence 
which could be expeéted from fuch 
a {mall quantity of flowers is in- 
tirely diffipated in the mafs of the 
oe g air; but the excefs 
muft 
